Eddystone 1837/2B Supplement User manual

Brand: Eddystone

Model: 1837/2B Supplement

Type: User manual

EDDYSTONE 1837

SE RIES

SERVICE DATA

for

r) coRREciloN BoARD

2) COUNTER MODULE

3) P. S. U.

Eddyatone Rodio Limited

Alvechurch Rood, Birminghom B3l 3PP,

Englond . Telephone :021'47 5-2231 .

Cobles: Eddystone Birminghom Telex: 337081

lssue No.l . Nov.'85'

( Kuwoit) "

tdd 0ne

-),

EDDYSTONE RADIO LIMITED. SEPTEMBER, 1982

TEST FOR CORRECTION BOARD,

I . Test Equipment Required:-

1837 PSU iis

1837 Correction test iig

Oscil loscope (l OmV sensitivity 30MHz bondwidth)

e.g. Telequipmenf D83

Frequency counter (tSUt-t= moximum frequency, sensitivity I00mV)

e.g. Hewlett Pockord type 53008

Signol generotor (high stobility 30MHz 800mV moximum output)

e.g. Morconi lnstruments

TflAlzB with TF2l70B synchroniser.

2. Visuolly inspect boords for:-

i) Trock shorts

.ii) Pins cut off boord (underneoth)

iii) Correct polority of tontolum ond electrolytic cops

iv) Bent lC pins

Connect boord to test iig.

Ensure signol generotor is disconnected from Fl input.

Switch on. The lock light moy or moy notcome on. Test operotion of the lock

light by operoting the lock switch.

Connecf oscilloscope vio l0:l probe set to lOmV ronge to integrofor output

socket.

Set test iig to 'lN TUNE' mode.

Set oscilloscope troce to mid screen position.

Push D/A set button ond odiust bolonce pot for zero drift of troce. (NOTE the

lock light comes on during this test). Typicol position of controls indicoted on

iig. Repeof this operotion severol times, ensuring D/A button is releosed ofter

eoch odiustment.

EDDYSTONE RADIO LIMITED SEPTEMBER, 1982

7. Switch to lock mode ond set the Goin Potentiometer to optimum position os

indicoted by diogrom on iig.

With oscilloscope still connected, connect frequency counter to F2 output. Test

F2 correction by slight odiustment of the fine tune knob. Noting the chonge of

correction voltoge on the oscilloscope in either direction (note control set to mid

position).

The F2 frequency chonges but reverts bock to the originol reoding ot the time of

going into lock.

Connect oscilloscope to Pin I3 eorth to Pin 12. Check thot o l00kHz sinewove

output is within the ronge of 2Y-2.5V peok to peok.

Fct

lO. Checking tl/2 output. Fine tune control mid position. Connect osciltoscope to

Pin 4eorth to Pin 3. Check for I00mVsquore wove ond 625kHz opproximofely.

Reconnect oscilloscope to Pin 6 eorfh Pin 3 ond note fhof the troce is the some os

thot on Pin 4.

l l . Connect signol generoior to F1 input.

Set to l0MHz CW B00mV EMF frequency locked. Connect oscilloscope to Pin B

ond eorth Pin 7, ond Pin 9 eorth Pin 7 eorth olternotively.

Nofe F17, output.

Check for I00mV squore wove frequency 5MHz.

Check Fl12 ovreut ot 30MHz i.e. I5MHz.

13. Connect oscilloscope bock to integrotor test point ond set up froce in tune mode.

14. Swifch to lock mode ond note thot troce stoys steody.

15. Chonge Fl input by I00Hz ond note thot the troce goes *ve or -ve by obout B0mV.

Repeot this fest in the ofher direction. Note fhot F2 outpuf frequency chonges by

I 00H2.

L_ 16 Repeot steps 13 to 15 ot lOVtHz.

su PPLEME NTARY AME NDME NT I 837

/28

1837/1838 SERIES

A modified correction P.C.B. is now fitted to this series.

The correction module circuit 12 is omended os follows:-

lC4 is deleted

lC3 is modified os shown

c2 R13

1st Osc

5V FEED

EARTH P!NS

-5V SUPPLY

lc3

MC1012 5 P

10 12

EI'

PIN 9

PIN 14

PIN 16

PIN 15

PIN 7

PIN 8

To 7 4S51

tc5

Pin 4

DELETED

ADDED

DE LETED

DELETED

ADDED

DELETED

ADDED

DE LETED

Rl2

220

Rl4

4K7

lc4

tc3

lc3

tc4

IC3

lc3

lc4

Section 4.12,2 o/ lnterface ,

lst Porogroph to reod:

The Ist oscillotor signal f1 from the coilbox is fed into on ECL line receiver connecied os

o Schmirt trigger *irh 20brV hysteresis lC3o. The output of lC3o ot TTL level drives o

Schottky divide by two, IC2q. prr^a I ^r ?

I C3a

I C3b

I C3c

t5 I C3d

vbb

2/34 15

Correction Printed Circuit Boord.

The prinied circuit baord is shown viewed from the legend side, ond is slightly less thon

octuol size.

'ir

r, I I

-;-

-OEts

;r:*n

a;-" '- ..-

:.I /*'

-otE-

/szw

',e;44*.<r'. vac

]**

;

Pcge 2 of 3

L_,

L-

COMPONENTS LIST

4 .12 .5 CA PAC ITCRS

RESISTORS

Rr2

RI3

Rl4

R]5

INTEGRATED CIRCUITS

TANTALUM ETECTROLYTIC 25V 20"/"

MOTOROLA

loH

22AR

4k7

tc3

tc4 MCl0l25P

DELETED

Page 3 of 3

EDDYSTONE RADIO LIMITED. SEPTEMBER, I982

COUNTER MODULE TEST SPECIFICATION

I . Tesf Equipment Required:-

Counfer test iig.

Power supply unit iig.

Signol generotor, high stobilify.

40MHz moximum frequency. 630mV'moximum oufput.

e.g. Monconi lnstrument. 20A28 ond 2170B synchronizer.

Frequency counter lSMHz moximum frequency.

. e.g. Hewlett Pockord type 53008.

Continuity meter.

e.g. AvoModel 8.

2. Remember onti-stotic removol procedure when removing C-MOS lC's.

Visuolly inspect boords, poying porticulor ottention to:-

o) Renioving solder shorts.

b) Bent lC pins.

c) Correct component locotions ond polorities.

d) All inter-connecting pins mounted ot right ongles ond soldered together

cleonly so thot the bords butt togelher properly.

e) Check with continuity meter thot the mico wosher under *5V regulotor

is not s/c ond then solder eorfh wire to moin eorthing tog.

f) Check thot the two chokes CHI ond CHZ ore glued firmly to bottom

boord.

g) Bend pins on boftom boord where the lMHz output co-ox trovels ond

ensure thot no shorp edges ore presented to the co-ox.

h) Check LF ond HF leod ore soldered correctly. With confinuity meter,

check thot they ore connected to correct position.

lnsert 'C'plug from iig into counter module, moking sure thot it is fitted the

correct woy os identified (Morked bottom), fit lMHz crystol ond switch on the

moin PSU. Note thot fhe oven becomes worrn.

5. Swifch on +9V on iig, disploy should reod 999000.

L'-

EDDYSTONE RADIO LIMITED SEPTEMBER, I9g2

6. Check the following functions on the iig:

)Overonge indicoted by disploy floshing ot opproximotely IHz.

Decimol point switching

Dimming

)

Connect LF (morked with red trocer) ond HF leods to the iig. Set the signol

generotor to l250kHz frequency locked, unmoduloted 630mV PD ond connecf

to LF input, switch on -9V supply iig. Disploy should reod 986500.

Connecf generotor to HF input on iig, some frequency ond level, disploy should

reod 11500. (First digit zero blonked).

Tune the signol generotor to 100kHz unmodulofed, 630mV PD, disploy should

be blonked. With the signol generotor sweep the frequency to check correct

sequence of counter digits 7, 2, 3, .9, 0. Check thot the overoll count

is correct up to I0MHz, switch in Schmitt trigger on iig ond check count up to

40MHz. The count should not be irregulor or drop off in sensitivity.

I0. Connect frequency counter to IMHz output co-ox leod. Check irequency swlng

of IMHz oscillotor is ot leost +30H2 - ISHz. Set to lMHz tlHz. Ensure unit

oven temperoture hos stobilized ot 650.

)

4.11 .9. Printed Circuit Boonds.

The printed circuit boonds orc shown viewed from the legend side, ond ore slightly less thon

octuol size. Eoch boord is shown firstly with legend ond reor copper trqck superimposed ond

secondly wiih legend qnd front copper trock superimposed.

Control Section, showing reor copper trock

L_-

EDDYS-TONE r 9764

tcaT

t-.

cH2

r-- I

i jt

'.*

-tIil

;

.:,-:

4ni\-:

ffi

Sr;g

Srai

€ii

*, jt

',s F

^ _iil

1;'!

cto

n46

Iq6

'; 1 | I',l'ji:

449

ct4 .i

s*r!

i) ;j

,i:.:*i-1

Confrol Section, showing front copper trock

Poge 4.11.9.

ta 7& "b5

*"€

os6

€'EEY

*-es TR3

IRI TR2 TR' 'F,5 IR6 TRA

€*€ dlqrc&

Disploy Section, showing reor coPPer trock

EDDY STONESCgSB 4P TiINE a!5s4F )-':i: ITR2 TR' TRs TR6

;

,o I

Disploy Section, showing front cepper trqck

lnput, Counter ond Lotch Section, showing reor coPPer trock

i:!

n .l

:.,1

9593

r -.1

I4t

".re22_;

:B:1::

N::T

)n,

..;

rcr tc2 tc3

r.. ,- -: EDDyS

-R9--

2t:1:-:,j

)

ili**"**

-R

-R22-

-Rli

-Rr3-

-Rt

R33

R35

R37

R36

R34

R3e

Poge4.ll.l0.

lnput, Counter ond Lotch Section, showing front copper trock

. ' '.:]

n:xxJ-F19:r.t*.-; ',+"*4 ...' r;-''- lS t t*.*,a:.t-tx:gr**

*-F*n

.-: I r. I

'-€-18

-,1

,:tl .

;:q?llc6

.rt.:i..,:iai J-

't .I

t,l

'd-C17i";iC4

it" '*"1* -

--T-*

.'.,}

Rei Volue Typ. Volftrge

c9.

cr0

CII

cl2

c13

t^1,1

\- l+

cls

CI6

c17

c]8

c19

c20

c21

c22

c23

C2+

r.rR

10n

2P5-27p

220p

470n

I0n

27Op

l0n

I 00p

22v

I0n

1 0q,

loF

22v

I0n

l0n

I0n

l0n

I0n

22v

l0n

22W

Disc Ceromic

Trimmer 8735P

NOT FITTED

Polystyrene

Polycorbonote

Disc Ceromic

Polystyrene

Disc Ceromic

Tubulor Electrolytic

Tontol urn E lectrolytic

Disc Ceromic

Tubulor Elecirolytic

Tontolum Electrolytic

Disc Ceromic

Disc Cerqmic

Disc Ceromic

Disc Cerqmic

Disc Ceromic

Disc Cerumic

Tontolunr E lectrolytic

Disc Ceromic

Tubulor Eiectrolytic

l25V

l00v

25V

125V

25V

25Y

l6v

25V

16V

I6V

25V

25v

25V

l6v

25V

lov

.)a\ /

LJV -i-BCo,(,-2090

?o/"

20ca

+'tCnt6*2A9L

29b

',10?o-20ozo

r-50');* I096

+50"4-lOozt

*809'u-2C%

+509i- I0",i,

209,b

?Qo/"

l.BA",;-24"i"

.839'"-209'o

.rEi'?c- lUlc

-r80o,"-2096

+500io-?00!"

+80%-2096

+8A"/"-209L

+8016-20",/o

24",'"

.BA1a-24"/"

. .- Ar\ , I t.t,

i-JtJY'o- lU-,/o

4, I i .5. Conrponents List- Module Prefix I L

Copocitors

Res i stors

Tcleronce

Ref Voi,.rer (Q)

Ri7

RI8

RI9

R20

R2I

R22

R23

R24

R25

R26

R27

R2B

R29

R30

R3I

R32

3k3

1l -:

3k.i

3k3

r,ot f itt:c.i

'rl.'2

1t--l

3k3

a! )

JK.)

3k3

Jki

JKJ

'lt -'1

i 00k

Ref Volue (Q)

Rr0

Ril

Rr2

Rt3

k I.1

Rt5

l( lo

3k3

i1 6

Ref

R33

R34

R35

R36

R37

Rs8

R39

R40

R4t

R42

R43

R44

r 00k

l00l(

I 00k

r 00k

1 00k

I 00k

r0M

3k3

Volue (r))

Resistors continued.

D iodes

Bc2'r4KB )

K2l4KB )

Bc2r 4KB )

BC214KB )

BC2r 4KB )

K214KB )

EL2r.4KB )

TyFr*

All resistors except R55 ore Mullord CR25, 0.3 Wott 5%.

Coils

Ref t/aloe/Iy?e/Port No.

CHI

cH2

CH3

D5i lo

D5t t6

3 . 3,Trll

Eddystone

Sismo SC60

Trons istors

TEXAs

Ref V.olue {Q)

R45

R46

R47

R48

R49

R50

R5l

R52

R53

R54

R55

3k3

t0k

4k7

22k

l00k

12k

t2k

5Rl 3 Wott W.V'/

Ref iype

TRl

TR2

TR3

TR4

TR5

TR6

1-D7

I N./

TR8

Ref

BAX I 3 Mullord

Ref Typ"

DSl

D52

D53

D54

D55

D56

5482-7663

5082-7663

5482-7663

Hewlett-Pockord

Hewleit-Pockord

Hewlett-Pockord

He.arlett- Pockord

Hewlett-Pockord

Disploys

lnte(Troted Circuits

Pof Typ.

trl

t\- I

tc2

tc3

tc4

tc5

tc6

tc7

tcR

tc9

KIO

ICII

lc12

ICI3

tct4

5N75r 07N-00

sN74LSr 0N-00

sN74LSr92N-00

5N74LSI92N-00

sN7415192N-00

SN74LSI92N-OO

sN74Lsr92N-00

st .i74Lst 92N-00

sr.l74Ls I92N-00

MC'I45O8BC P

MC I45O8BC P

MCI45OBBCP

MC I45'I I BC P

MC I45I 8BC P

exoS

exos

exoS

exos

Texos

Motorolo

fIOS Device. See oppendix for hondling instructions.

Miscelloneous

Pori No.

Ref Typ"

rc'!5

tc16

tc17

ICIB

tct9

tc20

tc21

tc22

tc23

tc24

tc25

tc26

tc27

,\dC 145I BBC P

sN74490i'.i-00

MCI4O49BC P

t'AC I401 I rK P

MC i 4OI 7P{:.P

lv{C I4049tiC P

MC I4O49BC P

MC I4OO2BC P

MCT2

MC'I4Oi l KP

^4C r 45288C P

MC78O5CT

MC79LO5C P

l,lotorolo

Texos

Motorolo

A,4otorolo

Motorolo

,\'rotorolo

A.4otorolo

f.4otorolo

Monsonto

A4otorolo

/vlotorolo

lAotorolo

Motorolo

Ref Description

XLI

SKA

5KB

SKC

PLC

IMHz Crystol

Crystol Oven

I0 woy connector top entry

l0 woy connector top entry

1 0 vroy connector side entry

l0 woy free connector (moting for obove)

Prinied Circuit Boord (Disploy)

Printed Circuit Boord Assembled (Disploy)

Printed Circuit Boord (lnput, Counter ond lotch)

Printed Circuit Boord Assembled (lnput, counter ond

lotch)

9605P

8647P

9863P

9865P

9866P

9584P

LP3505,r27

9593PA

LP3506/29

Miscelloneous continued. . .

I Spores.sh.ould be .ordered by quoting the comptete Circuit Reference including the module

t- prefix (where opplicoble), the description ond the port number given in the list. From time

to time, components of the type listed rnoybe unovoitoble ond equivolent types moybe fitted

I o. supplied os sPores. All orders ond enquiries.should be directed to the oddress belovr,

L- quoting the Type ond Seriol Nos. of the receiver in oll communicotions.

EDDYSTONE RAD IO LIMITED,

SALES AND SERVICE DEPT.,

ALVECHURCH ROAD,

BIRMINGHA,!1 B3I 3PP,

ENGIAND.

TELEPHONE :

TELEX:

CABLES:

021 -475-2231

337081

EDDYSTONE

BIRMINGHAM

Description

Ref

Printed Circuit Boord (Conrrol)

Printed Circuit Boord Assembled. (Control)

Disploy Module Complete

9764?9

L?3s05/28

LP35i2

Pcrt J{o.

4.12.5. Components List. Module Prefix 12.

Copocitors

Resistors

Ref Volue (Q)

r0k

330

Ref Volue (Q)

rks

rk5

)

TyP" Voltoge

Ref Volue

25V

250V

750V

r00v

l5v

350V

25V

I6V

l6v

10v

35V

25V

25Y

25V

25Y

25V

25Y

25V

25Y

25V

2sv

25V

+80'A-20"h

*80o--2Oo/"

2A9L

20"/o

209L

2A?'"

+50?,"-1096

I no,/

lv/o

I 0o,6

I 09io

2Aoi"

+509,6- I 00/"

+50",ir- I 0o,'"

+509,.- l 09,.

) I tv'^

200k

lUYa

a^,o/

LV /O

20",'"

20o/"

+B0a1o-20"/o

+B0g'.-20%

+80,"/"-209lo

+809'"-20%

+809L-200h

*BAo/"-20o,/o

+BA9L-20"A

+80o,/o-209'b

+80"6-209',o

t_Qfio/^_)(\o./^

+8A9b-249L

+80aa-2ao,/o

+8006-200,6

+B0c'.-20%

+80"/"-20"h

+80"'"-2A96

+80?'.-209(r

Disc Ceromic

Tsntolum Electrolytic

Disc Ceromic

Ceromic

Polycorbonote

Tube Electrolytic

Silvered Mico

Tontolum Electrolytic

Tubulor Electrolyiic

Tubulor Electrolytic

Tontolum Electrolytic

Disc Ceromic

Disc Cerqmic

cl4

CI5

cr6

c17

ClB

ct9

c20

c21

c22

c23

c24

c25

c26

c27

c28

c29

c30

c3r

c32

r11

c34

c35

c36

lcsz

c10

ctl

cl2

cl3

l0n

I 00p

I 00n

15Qr

820p

I 00p

820p

I oi,

rsq,

I50p

22Oy

4v7

4pv

lop

lov

lop

l0n

I0n

'lCn

l0n

I0n

l0n

I0n

l0n

I0n

10n

I0n

Toleronce

Resistors continued

Ref Volue (Q)

Rt0

RI]

Rt2

Rt3

Rt4

Rl5

R]6

R',t/

RI8

rk5

rks

220

224

2k2

2k7

3k9

All resistors ore Mullord CR25, 0.3 Wott 5%.

Potentiometers

Chokes

D i odes

Ref TyP.

DI BZX79 C4V7

Ref TyP.

TRl BC I O7B

Ref Volue (Q)

Rl9

R20

R2I

R22

R2s

R24

R25

R26

R27

R28

R29

R30

100

1k2

560

sk3

4k7

Ref Description Port No.

RVI

RV2 4k7 Corbon linear preset

560 Corbon lineor preset 9031 P

9034P

ReI YolvefType/Port No.

CHI

CH2

CH3

CH4

4.7mH

D5il6

ImH

Sismo SC60

Eddystone

Sigmo SC60

Tronsistors

lntegroted C ircuits

Miscelloneous

Ref TyP"

tcr

tc2

tc3

tc4

tc5

tc6

tc7

lc8

tc9

Kro

rcil

tcl2

tc 13

tcr4

rc15

ICI6

lc17

ICIB

rct9

tc20

tc21

lc22

tc23

tc24

tc25

tc26

sN75107AN-00

sN74Sr I3N -00

MC I O35P

MC I O6BP

sN74S51N-00

sN74393N-00

sN7402N -00

sN7470N -00

sN74L75N-00

sN74197N-00

sN74r l6N-00

MC I4O8L-8

sN74490N-00

sN7470N - 00

sN7400N - 00

sN74r64N-00

sN7430N - 00

sN7400N - 00

sN7472N - 00

MC78O5CT

MC79LI5C P

MC79LO5C P

Texos

Motorolo

Moiorolo

Texos

Motoroio

Texos

Motorolo

Description

Printed Circuit Boord

Printed Circuit Boord Assembled

SK,A. Connector 10 woy

Pl-A . Connector l0 woy. Free (Moting

for obove)

Correction Module complete

Port N.o.

9570P

Ln5a6/1

9865P

9866P

LP3506/1

Spores should be ordered by quoting the complete Circuit Reference including the module

prefix (where opplicoble), the description ond the port numbergiven in the list. From time

io time, components of the typelisted moybe unovoiloble.nd eq,ivslsnt.types rnoy be fitted

or supplied os spores. Atl orden ond enquiries should be directed to the oddress below,

quofing the Type ond Seriol Nos. of the receiver in oll communicotions.

EDDYSTONE RAD IO LTD, ,

SALES AND SERVICE DEPT.,

ALVECHURCH ROAD,

BIRMINGHAM B3I 3PP.

ENGLAND.

TELEPHONE :

TELEX :

CABLES :

a21 -475-2231

337081

EDDYSTONE

BIRMINGHAM

Eddystone 1837/2B Supplement User manual

Brand: Eddystone

Model: 1837/2B Supplement

Type: User manual

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Eddystone 1837/2B Supplement User manual

Eddystone 1837/2B Supplement User manual

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